Superheater header



NOV. 3, 1931. H, FRANK 1,829,894

SUPERHEATER HEADER F'led Jan. 10, 1931 y 2 Sheets-Sheet l NVENTORHerbert Fran m ATTRNVV oo o'o oo oo oo o'oo oo oo oo oo oo ooo o'o oo oooo o'oooo Nov. 3, 1931. H. FRANK SUPERHEATER vHEADER Filed Jan. l0, 19512 Sheets-Sheet 2 INVENTOR Herbe T FramK BY ATTORNEY Y Patented Nov.3,1931 v NTx-.oFi-"ics f nEATnncoMPAN'L or NEW Yonx', N.. Y..

1 i Application ,ma january 1o,1'931,serial,No.'5o7;s5o,fai1ain'eermanyrebruary s, 1930.

Y i im'llheiinvention relates to divided superlieatfer headers withlinger-like subsidiaryheaders .for the connectionv of superheateryelements. :'Its purpose yis to connect the superheater headerfandsaturated header in such va'manner that temperature stresses caused byjdiilerential expansionv ofthe two chambers be kept as small aspossible.

pose the invention consists iin'having the two headers heldjfirmly intheir relative positionv -arel avoided and that the.` changesv in therela-v tive location of .the subsidiaryheaders caused bythe longitudinalexpansion of the headers Forthis puronly for a short vdistance by theconnection provided on one'of the longsides, for example,'thebackside,and that, except for this connection, a relative displacementof'rthe headersin a longitudinal direction is Apossible Ywhereas theconnection yoff-theVA other; lon-` gitudinal side, for examplel theVfront side,

" permits of :relative longitudinal and vtransf verse[displacement:-rAccordin ,to anfadvantageous form. of the: invention, the,y `two`headers are equippedon theirback sides with transverselyarranged'eyelets through which aifrod extends, the'A rod lcarrying yadistance manner the two headers yarevheld firmlyaat Ytheir middleintheir relative position, while' they7 can move relativelyto each otherin the longitudinal direction ofthe rod. VOil-the front side thetwolheader'sare connected, for

example by means of verticallyextendingl y-screws'fwhich have sufficientplay in the openl in gs oftheconnectinglugslofthe superheated dangerousvstresses kcannot occur.

' and thus to avoid relative displacement of the subsidiary headers,itis advisable to provide for connection of the two headers on theirfrontside by means of a continuous lon itudinal bar against whichvtheconnecting ugs of the two headers abutin such a manner that a relativemovement of the subsidiary headers can occur only in a horizontaldirection.

.In thev drawings, illustrative examples of the inventive idea areshown. Fig. l shows a rearview ofv one form of the invention, that1s,a"view from the smoke-box tube sheet of the locomotive. Fig. 2 is aview from below, and Fig. 3 a transverse section on line 3-3 of 2bn anenlarged scale. Figs. 4 to-6 showy a header of another form'also in rearelevation, projection from below, and ,in-cross-sed tion, respectively,the last of these Views be'- -1ng on line 6 6 ofFig. 5. Fig. 7 shows the.same superheater header with another form of the invention, theviewbeing from below. In. Figs. l to 3 the reference' numeral 1designatesthe saturated steam header with the longitudinal chamber 2,the transverse Vfinger-like.cross-headers .3 extending from thischamber, andthe connection-4 to which `the pipe carrying saturatedsteamv from the boiler isfconnected. y5"is the 'superheated steam headerwith the longitudinalfchamber 1,6, the'. finger-like transverse vsubsidiary 'headers extending from it, and the "connect -ingllanges 8 towhich are attached the steam `pipes leading to the steam chests. Thesaturatedy subsidiary headers' and the superf heated' subsidiary headers7 are in the assembled yheader `mutually intermeshed and sepa- -ratedfrom each other lby the air spaces 9.

Through these spaces extend the bolts (not shown) l which serve tosecure the superheatei :elements (also not shown) which communi"- y,cate withfthe openings 10 inthe bottom ofthe header in a known way,so.that a displace-y 'mentV ofthe Isuperheate'dheader relative vto thesaturated header #inl the longitudinall disubsidiary headers.Thesaturated header is equzpped laterally with lugs l2 vby means ofwhich'it is supported inra known manner on lbrackets secured to thewallof the smokebox.l Aty the lrear 'side of theheader the saturatedheader and the superheated header are connectedby meansiof around rod orbarl whichjextends through the eyelets 14 and 15 cast tintegral withVthe subsidiary headers 3 and 7. Between themiddle eyelet "14 :ofthesaturated headers and the two neighboring eyelets l5 of the supexheatedheader, therody 13 carries the disks 16, one oneach side, 'whichv` 11ein close contact with the 1 lateral surfaces vof the eyelets. In thisWay the relative spacing ofthe subsidiary headers ,y n 3 and 7 is fixedin the middle While at all other points the superheated header canelongate on both sides in the longitudinal direction of the axisof-theiconnecting rod 1.3. On the frontsideithe 'saturated header` andthefsuperheated header are connected by meansof vertically extendingbolts 18 Which extend *throughopenings invertically align-edlugsv v 19of the saturated header yand 20 ofthe-su# perheated header. In theopenings 219il the lugs 20,-the bolts 18 have enouglrplay topery i I8arefnotpulleduptight.

Y mit the ,superheate'd .header tol move freely "both'in a longitudinaland in atransverse direction. In order that'ethisv movementy shallynotbe;made-difficult, the nuts QQfonthestucl-,s

In :thegcase 'of =.the header shovvn in lto, the subsidiary' headers donot extendto.- -ivard-eachlotherfasin the 'form irst describedbut'I'ieXt-end froin. Vthe :longitudinal ,Chanil nel 23 of the saturatedheader 24' and the longitudinal channel 25 VofV fthesuper-heated header,2,6 forwardiin the-same direction. rllhe subsidiary headers .of fth'e.saturated header are designatedebythe:numeral 27f-'an`dvthe in ftervening ssuperheated subsidiary .headers by the nmneral28.Theconnection ofrthefsaturated header; andfthe fsnperheated header l on.thesameeway'fas Lin the oase first@ described, :that is,lbymeanspofaground rod which e2;- tends vvthrough eyelets -30 ofwzthe saturatedheaderQ/.l andthrougheyelets.Blfofthe-superheat-ed k'header' 36.lBetween the Vmiddle eyelet dandztlre 'twogneighboring' eyelets- 8.1,the

rod 1:3 carries the distance disks .16. 4 On the front side,-liowevenztlie Llugs of the, subsidiary headers" are not connectedinpairs byscrews but irather'va. continuous bar 32zis used `for thisconnection which; engages .recesses ofthe alternating flugs 33` of :thesaturated subsidi- Y aryrheaders27 rand .13.4 of the-'superheatedsubsidiaryheadersz28. The bar 32; is .pulled up` -irmly y'against @thebottomV of the recesses 1n .thezlugs 33byfmeans :of studs -35 which eX-itend througlrtthe -slottedrholes of' thexbar 32.

Therecessesxin theilugs llvarefdeeper so :that betweenthe tbarcandf thebottom otfthe recesses clearances 36 are left whichr make :itk possibley.forithe;s uperheated subsidiary headers 28 to expandffreely inz'theirlongitudinal direction.

,n vIn additi'ongthe Vconnection .-f by means fof the Vbar 32 permits a:relativefdispla'cement ofthe subsi-diary headers in their: transversedirection, Whereas thebar is fitted vertically in *thexrecessesofltheflugs 33, 34 in such a manner lthat-a vertical :relativedisplacement of `the' subsidiary headers isgmade impossible.

"In the form of thefinvention accordi/ng to 'tWo parts.

4ofthe header the rsaturated header 44 and superhegated header'each havetWo longitudinally arrangedeyelets tiand Adcon-V nected Vrigidly ttoeach 'other bymean's Aofthe boltsA. It Will be seen'that vin this formothe connection vvthe saturated header Y and fsuperheated' headerVaretherefore held f firmly in their. `.relative f position f only on;`their rear .side and only over' a shortd'istancenearzthe center :soVthat fthe.; expansions of v the `rsuperheated header Vduetto `heatcanoccur-:Without hind-rance..V y X v .1. .l l

{Iolailnrf 'Y 1 Y f 1. A two +part, -superheater f header, the `@tivoparts. `lveach l.having f subsidiary transverse headers, those of one:part alternating with those of the other, said-i parts being secured;VvY together, characterizedby fthe .fact that y,the

position only at one side zandfover. onlygafshort ldistance' nearl thecenterwhereas they arey held relatively. toweachother rat, other pointsor" the said .sidei and fat '.the opposite :side in SuchiaWayithat-.relative `longitudinal Vand 'transverse 'displacements .arepossible. -Y 1 1 V2. A superheater `header,f.comprising:two separateparts each having :subsidiary .trans` rve'rse i headers, those of .one.partVV alternating v"With those oftheothenf andjlneans to secure l'thetworparts'together, saidrmeans comprising transverse eyeletson one-sideofgthe headers and vdistributed valong the-"entirel side, a` barpassingthrough vthe eyelets, and adistance kpiece-on the bar adjacent'to fV and contacting 'with twoneighbo'ringeyelets.

3. A '"superheater header in accordance with 'claim 2, thetwo partsVbeing further y l connected lat itheinsides Aopposite fthe Vside`havingfthe eyelets -byfbolts eXtend-ingvertixcally'throug'fh''holesinrthe-parts,'theholes'ofv one partbeing'lar'gerth'ain the bolts toperin-it relatively? horizontal movementbetween the HRBERTFRANK;

.Fig 7, the connection'of the saturatedsubl l .sidiary headers 218 on.thezfront side isfcarried out in ithezwzayljnstdescribed by-rneans ofl a`sidiaryheadersfand the.superheatedsub-fV y I lll

